You really need to take a rest from the enthusiasm over your recent discovery that the plant is much older than what people in the middle ages thought. Most people around here already knew that long time ago. The 10,000year mark is significant because the current interglacial period began about 12,000 years ago, and the first couple thousand years of that was rapid flooding of then coastal plains (today's continental shelf) as melting of massive continental ice caps took place (some were as far south as today's New York City) , so 10,000 year mark was about the start when the sea boundaries are anywhere close to where they are today.
The discussion of 10,000 years in this context has nothing to do with bible dating like you are guessing . . . although some of the bible context may have been fragmented memories of that rapid flooding from 12,000 years ago to 10,000 years ago.